Improvement in methods of securing the doors of hay-presses



UNITE rains CORNELIUS MARTRATT, ,OF NEV BALTIMORE, NEW YORK.

lll/IFROVEMENTV lN METHODS OF SECURING THE DOORS 0F HAY-PRESSES, do..

Speciication forming` part of' Letters' Patent No. l7,l0. dated April 2l, 1857.

' lowing is a specification.

The immediate application of my invention is to the doors of hay-presses, against which the pressed hay forces itself With so great an elasticity that in all hay-presses hitherto invented the doors, when unlatched or relieved from their fastening, of any kind, ily open with a'violence, making the greatest caution necessary to prevent injury to the operators.

Figure l represents the end framing of a hay-prcss with its door closed with the bolt.

Fig. 2 is an enlarged plan to show the bolt and the form of that part of the door-bars upon which it operates.

Similar letters in the figures denote the same parts of the apparatus.

A A is the frame-Work of and surrounding the dooi` of ahaylpress; B, the door itself; D, the hinge-post, and C C strong battens connecting the post and the door. y Y

To the door-post opposite to that to which the door is hinged is attached, by strong straps or staples a a, a strong crank-shaped loop oi" iron, E, its projection or crank made capable of passing over the ends ofthe battens, and the bars themselves being long enough to project under the crank-loop when it stands at right l angles with the post, thus enabling the loop to hold it firmly against the post. The ends of C G are rounded off in an elliptical or eccentric form, as shown at b b, Fig. 2, in such a Way that as the crank is turned down from its position the ends ofthe battens, pressing camwise against E, may gradually open outward, as shown by the dotted lines in the drawings, Where E E'Z Eis show the loop in varying positions With the relative positions of the door as it opens gradually. Theloop E is managed by means of the right-angled bar or handle H, pivoted on the side ofthe post A, connected by a short link, G, with the` handle, the arrangement being sueh that When the loop is over the bar the short arm of the handle, the link, and the loop may be in line with each other, thus preventing any pressure upon the bar from shifting the position of the parts and forcing the bar out ofplace.

What I claim, and desire to secure by Letters Patent, isv The form of the crank or loop E, the elliptic or eccentric form of the ends of the battens C C, andthe combination of the one With the other'` for the purpose of securing a door or hatch, and for the purpose of preventing a sudden and dangerous start of the door in l CORNELIUS MAR-TRATT.

XVitneSseS:

J. MILLER, Rioni). Vanier; DE Wrr'r. 

